672448622544 has 120 divisors (see below), whose sum is σ = 1947376922400. Its totient is φ = 216357899520.

The previous prime is 672448622479. The next prime is 672448622551. The reversal of 672448622544 is 445226844276.

672448622544 is a `hidden beast` number, since 6 + 7 + 2 + 4 + 4 + 8 + 622 + 5 + 4 + 4 = 666.

672448622544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×672448622544² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15759799 + ... + 15802409.

It is an arithmetic number, because the mean of its divisors is an integer number (16228141020).

Almost surely, 2^672448622544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672448622544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (973688461200).

672448622544 is an abundant number, since it is smaller than the sum of its proper divisors (1274928299856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

672448622544 is a wasteful number, since it uses less digits than its factorization.

672448622544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46433 (or 46424 counting only the distinct ones).

The product of its digits is 20643840, while the sum is 54.

The spelling of 672448622544 in words is "six hundred seventy-two billion, four hundred forty-eight million, six hundred twenty-two thousand, five hundred forty-four".